integumentary system-hair Flashcards
(35 cards)
1
Q
The human body is covered with hair, except:
A
- Palms, Soles, Lips, Portions of external genitalia
2
Q
- Functions of Hair
A
- Protects and insulates
- Guards openings against particles and insects
- Is sensitive to very light touch
3
Q
- Located deep in dermis
- Produces nonliving hairs
- Wrapped in a dense connective tissue sheath
- Base is surrounded by sensory nerves (root hair plexus)
A
- The Hair Follicle
4
Q
- Base is surrounded by sensory nerves or
A
root hair plexus
5
Q
Accessory Structures of Hair
A
-Arrector pili muscle
-Sebaceous glands
6
Q
- Involuntary smooth muscle connected to the hair root
- Causes hairs to stand up
- Produces “goose bumps
A
Arrector pili muscle
7
Q
- Secrete Sebum (oily secretion)
- Lubricate the hair
- Control bacteria
A
- Sebaceous glands
8
Q
Regions of the Hair
A
- Hair root
- Hair shaft
9
Q
- Lower part of the hair beneath surface
- Anchors hair
A
Hair root
10
Q
- Part of the hair that extends past the surface
(exposed)
*Not attached to the integument
A
Hair shaft
11
Q
- Begins at the base of a hair, deep in the dermis
- The hair papilla contains capillaries
- The hair bulb produces hair matrix
A
Hair production
12
Q
contains capillaries
A
hair papilla
13
Q
-produces hair matrix
-A layer of dividing basal cells
- Produces hair structure
-Pushes hair up and out of skin
A
hair bulb
14
Q
Types of Hairs
A
- Vellus hairs
- Terminal hairs
15
Q
type of hair
* Soft, fine
* Cover body surface
A
- Vellus hairs
16
Q
Types of Hair
* Thick, May be heavily pigmented
* Head, eyebrows, and eyelashes
* Other parts of body after puberty
A
- Terminal hairs
17
Q
- Produced by melanocytes near the
hair papilla - Determined by genes
A
- Hair Color
18
Q
- Sebaceous Glands (oil glands)
- Secrete sebum
A
Exocrine Glands in Skin
19
Q
- Secrete sebum
A
- Sebaceous Glands (oil glands)
20
Q
Two Types of Sweat Glands (Sudoriferous glands)
A
- Apocrine glands
- Merocrine (eccrine) glands
21
Q
Sweat Glands or
A
Sudoriferous glands
22
Q
Watery secretions what gland
A
Merocrine (eccrine) glands
23
Q
Types of Sebaceous Glands
A
- Simple branched alveolar glands
- Sebaceous follicles
24
Q
- Associated with hair follicles
A
- Simple branched alveolar glands
25
* Discharge directly onto skin surface
-Sebum
- Contains lipids and other ingredients
-Lubricates and protects the epidermis
- Inhibits bacteria
* Sebaceous follicles
26
* Contains lipids and other ingredients
* Lubricates and protects the epidermis
* Inhibits bacteria
* Sebum
27
* Found in armpits, around nipples, and groin
* Secrete products into hair follicles
* Produce sticky, cloudy secretions that break down and cause odors
* Become active at puberty
* Surrounded by myoepithelial cells
Apocrine Sweat Glands
28
* Squeeze apocrine gland secretions towards hair follicle
* In response to hormonal or nervous signa
myoepithelial cells
29
* Widely distributed on body surface especially on palms and soles
* Smaller, coiled, tubular glands that discharge directly onto skin surface
* Active from birth
* Sensible perspiration
* Secretion contain water, salts, and organic compounds (peptide with antibacterial
properties)
Merocrine (Eccrine) Sweat Glands
30
Functions of merocrine sweat gland activity
* Cools skin
* Excretes water and electrolytes
* Flushes microorganisms and harmful chemicals from skin
31
Other Integumentary Glands
1. Mammary glands
2. Ceruminous glands
32
-Covered in reproductive system)
- Produce milk
1. Mammary glands
33
* Produce cerumen (earwax)
* Protect the eardrum
Ceruminous glands
34
earwax
cerumen
* Protect the eardrum
35
